There are interesting articles published by researchers suggesting that when we are in ketosi our bodies then break down cholesterol plaque in the blood vessels and recycle it. There are also research papers published on the benefits of autophagy in responding to heart disease, and improving the blood vessels but then they go on to focus on developing drugs to trigger autophagy.
There are a number of research papers indicating that a month of ADF or a 10 day fast reduce blood pressure and therefore reduce the main risk factor for strokes and heart attacks which links with the cholesterol issue again.
Perhaps thats a topic to discuss with your endocrinologist?
In our local hospital the cardiac team consists of a single cardiologist and a team of 2 nurses who are the ones who have meetings with patients. I have tried to engage them with links to research but didn’t get very far. The NHS system according to them is to accept that nothing can be done to reduce damage / improve cardo health you just need to eat 3 meals a day with carbs and then take pairs of drugs including repurposed drugs for diabetics to control the symptoms as long as possible. You are so lucky to find someone interested in research.